wasm-pack で JS の Promise を await できる非同期 Rust を書いて node.js で動かす - Qiita

use serde::Deserialize; use wasm_bindgen::prelude::*; use wasm_bindgen_futures::JsFuture; use js_sys::{Promise, Error}; #[wasm_bindgen(inline_js = "module.exports.sleep = function sleep(ms) { return new Promise((resolve)=> setTimeout(resolve, ms)); }")] extern "C" { fn sleep(ms: f64) -> Promise; } #[derive(Deserialize)] pub struct Opt { pub count: u32, pub wait: f64, } #[wasm_bindgen] pub async fn